Hair drier



July 23, 1935. s. A. HAMILTON HAIR DRIER Filed April 20, 1933 2Sheets-Sheet 1 AIL/Z Zhwentgr (Ittomegs July 23, 1935. s. A. HAMILTONHAIR DRIER 2 Sheets-Sheet 2 Filed April 20, 1933 dijifiwmiltazi 3mm,

' Patented July 23, 1935 UNITED STATES HAIR DRIER Sidney AlexanderHamilton, Shreveport, La.

Application April 20, 1933, Serial No. 867,074

2 Claims. (01. 34-26) This invention relates to a hair drier for use inbeauty parlors and the like, one of the objects being to provide asimple and compact structure wherein the hair is subjected to the dryingaction 5 of air circulating entirely within the apparatus.

Another object is to provide apparatus which can be operated at lowcost, utilizing any preferred form of heater, it being possible toemploy a battery of heat applying hoods for use simul- 10 taneously on anumber of patrons.

' Another object is to provide means whereby the circulation of the aircan be controlled readily both as to volume and velocity.

With the foregoing and other objects in view 20 made in the constructionand arrangement of parts without departing from the spirit of theinvention as claimed.

In the accompanying drawings the preferred form of the invention hasbeen shown. 25 In said drawings:

Figure 1 is a View partly in side elevation and partly in section of theapparatus constituting the present invention.

Figure 2 is a vertical longitudinal section 30 through the apparatustaken substantially on the line 22, Figure 1, parts being broken away.

Figure 3 is a section on line 3-3, Figure 1.

Figure 4 is a section taken substantially on line 4-4, Figure 1, partsbeing broken away.

5 Figure 5 is a view showing in detail a cluster of air ports in thehood.

Referring to the figures by characters of reference l designates ahousing which can be of any suitable size and proportions. Arrangedwithin this housing adjacent to the center thereof is a heater casing 2containing a heater of any preferred construction. For. example a seriesof burners 3 for consuming gas can be arranged within the lower portionof the casing 2 where 45 they are supplied with gas from a pipe 4 havinga controlling valve 5. Any suitable thermostat mechanism, indicatedgenerally at 6, can be operatively connected by any well-known means tothe valve so as to maintain a substantially 50 uniform temperaturewithin the apparatus. A vent pipe 1 extends from the upper portion ofthe heater casing 2 and opens at any convenient point through the top ofhousing I so that fumes can thus be carried off from within the heater.

55 Located in thehousing l at opposite sides of which will appear as thedescription proceeds,

the heater casing are drums 8 and 9 joined by an air jacket l0 whichextends upwardly from the drum 8 tangentially thereof along one side ofthe casing 2, over the top of the casing and along the opposite side ofsaid casing to the drum 5 9. Thus the two drums are constantly incommunication but air flowing from one drum to the other must travelalong the outer surfaces of the heater casing 2.

Arranged above the heater casing and extend- 10 ing lengthwise of thehousing I are a distributing flue l I and a return flue l2 arranged insuperposed relation. The upper or return flue I2 is of less width thanthe lower flue ll so that said lower flue will thus extend laterallybeyond the upper flue l2 as clearly shown in Figure 1. A a port i3 isprovided between these flues and is normally closed by a relief valve I4which will open upwardly to permit direct flow of air from fluel i intoflue l2 should the air be subjected to excessive pressure. I

The return flue I2 is joined at one end to one end of the drum 8, asindicated at l5 and one end of the distributing flue H is joined at itto one end of the drum 9.

Journalled within drum 9 is a shaft ll adapted to be driven by anelectric motor 6 8 or the like and this shaft carries a fan 89 locatedin the drum between its connection 5 and the inlet 20 from the jacketl0. The thermostat apparatus 6 is preferably located in the drum 9 nearits outlet end.

Extending upwardly from the projecting side portions of the distributingflue H are branch flues 2! in the form of tubular posts which extend tothe top of the housing I and are fastened thereto in any suitablemanner. Additional branch flues 22 are extended upwardly from the returnflue l2 and each of these may be attached in a suitable manner to thetop of housing 9 One flue. 22 is provided for each flue 2i and the flues2i and 22 of each pair are located close together and in parallelrelation as shown in Figure 1.

Slidably mounted in the upper portion of the housing adjacent to eachpair of flues 2| and 22 is a rod 23 yieldingly supported by a spring 24and provided with an adjustable collar 25 whereby the upper end of therod can be maintained normally at a predetermined elevation.

The upper end of each of the rods 23 is joined to a head 26 in which isseated a pair of outlet flues 2'! and 28 which extend over the housing Iand merge into downwardly projecting extensions 29 and 30 whichtelescope within the flues 2| and 22 respectively. These outlet flues 21and 28 support a hood 3| adapted to be fitted onto the head of a patron.The hood is formed with an inner lining 32 and an intermediate lining 33so that an air jacket 34 is thus formed between the intermediate lining33 and the outer structure of the hood while another air jacket 35 isformed between the intermediate lining 33 and the inner lining 32. Shorttubular connections 36 open through the intermediate lining 33 and theinner lining 32. Surrounding each of the ports thus provided in theinner lining 32 is a group of small inlet ports 31 which open into theair jacket 35. Thus each outlet port formed by a tubular connection 36and its associated inlet ports 31 cooperate to form a cluster wherebyair issuing under pressure from the ports 36 will be projected in theformof a needle spray and can subsequently flow into the adjacent ports31. This arrangement of ports has been shown in detail in Figure 5.

The flue 21 opens into the air jacket 34 in the hood and the flue 28opens into the air jacket 35. Each of these flues is provided with avalve 38 connected to an operating lever 39 or the like whereby the flowof ai through the flues can be controlled. Another v lve 48 normallycloses a port 4i joining the two flues 21 and 28. This valve can beoperated by any suitable means, such as a lever 42 to permit air tocirculate directly from one flue to the other without entering the hood.I

As has been stated heretofore this apparatus can be made to permittreatment of a number of patrons simultaneously. For example, and asshown in the drawings, two hoods can be mounted at each side of thehousing I. Obviously this number can be increased or reduced.

When heat is generated within the casing 2 the surfaces of the casingwill be raised to a high temperature. When the fan I1 is set in motion aforced circulation of air will be. set up. The air will be drawn fromthe jacket l0 where it has been heated and will enter drum 9 throughinlet 20. It will then be expelled through the connection lfi into flueII and then distributed through the branch flues 2| into the extensions29 of flues 21. If the valves 38 are open and valve 40 closed the heatedair thus supplied to flues 21 will be directed into the jackets 34 fromwhich it will be discharged in jets through the ports 36. It isunderstood of course that during this operation the hood is applied tothe head to be dried. Consequently the jets of air issuing from theports will flow into the hair and be dissipated so as to return in partthrough the ports 31 to flues 28. The circulation of the heated airthrough the hair thus tends quickly to dry it and the air, while stillin a warm condition, will be sucked through flues 28 to flue l2 andthence to the drum 8 from which'it will escape to the jacket It] in itstravel back to the drum 9. As the air is warm when returned to the drum8 less heat will be required to restore it to its proper temperaturethan should a constant supply of cold air be furnished to the heater. Inother words, when the hoods are in use the air operates practically in aclosed circuit and its temperature thus can be kept at a high degreewith the expenditure of very little fuel.

By mounting the hoods as described they can be adjusted vertically so asto be applied readily to patrons of different heights.

It is to be understood that, if desired, any suitable separators ormoisture absorbing means can be used within the apparatus for keepingthe circulating air in a dry condition.

What is claimed is:

l. A hair drier including a hood adapted to house that portion of a headof a patron to. be dried, there being an air distributing jacket and anair return jacket in the hood and ports exjackets in the hood and thedistributing and return flues respectively, means for setting up aforced circulation of air from the return flue to the heater and fromthe heater to the distributing flue, means within the extensible fluesfor controlling the flow of air to and from the jackets and a normallyclosed valved opening between the flues adapted, when open, to allowcirculation of air from one flue to the other when air is shut off fromthe jackets by said air controlling means.

2. A hair drier including a hood adapted to house that portion of ahead, of a patron to be dried, there being an air distributing jacketand an air return jacket in the hood and ports ex-' tending from therespective jackets for directing air to and from the hair of the head inthe hood, said jackets being substantially coextensive and arranged onewithin the other, an air heater, an air distributing flue, an air returnflue, extensible flue connections between said jackets in the hood andthe distributing and return flues respectively, means for setting up aforced circulation of air from the return flue to the heater and fromthe heater to the distributing flue, a relief valve normally closingcommunication between the distributing and return flues, and meanswithin the extensible flues for controlling the flow of air to and fromthe jackets.

sro. A. HAMILTON.

